[ https://issues.apache.org/jira/browse/YARN-3574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brahma Reddy Battula reassigned YARN-3574: ------------------------------------------ Assignee: Brahma Reddy Battula > RM hangs on stopping MetricsSinkAdapter when transitioning to standby > --------------------------------------------------------------------- > > Key: YARN-3574 > URL: https://issues.apache.org/jira/browse/YARN-3574 > Project: Hadoop YARN > Issue Type: Bug > Reporter: Jian He > Assignee: Brahma Reddy Battula > > We've seen a situation that one RM hangs on stopping the MetricsSinkAdapter > {code} > "main-EventThread" daemon prio=10 tid=0x00007f9b24031000 nid=0x2d18 in > Object.wait() [0x00007f9afe7eb000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000c058dcf8> (a > org.apache.hadoop.metrics2.impl.MetricsSinkAdapter$1) > at java.lang.Thread.join(Thread.java:1281) > - locked <0x00000000c058dcf8> (a > org.apache.hadoop.metrics2.impl.MetricsSinkAdapter$1) > at java.lang.Thread.join(Thread.java:1355) > at > org.apache.hadoop.metrics2.impl.MetricsSinkAdapter.stop(MetricsSinkAdapter.java:202) > at > org.apache.hadoop.metrics2.impl.MetricsSystemImpl.stopSinks(MetricsSystemImpl.java:472) > - locked <0x00000000c04cc1a0> (a > org.apache.hadoop.metrics2.impl.MetricsSystemImpl) > at > org.apache.hadoop.metrics2.impl.MetricsSystemImpl.stop(MetricsSystemImpl.java:213) > - locked <0x00000000c04cc1a0> (a > org.apache.hadoop.metrics2.impl.MetricsSystemImpl) > at > org.apache.hadoop.metrics2.impl.MetricsSystemImpl.shutdown(MetricsSystemImpl.java:592) > - locked <0x00000000c04cc1a0> (a > org.apache.hadoop.metrics2.impl.MetricsSystemImpl) > at > org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.shutdownInstance(DefaultMetricsSystem.java:72) > at > org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.shutdown(DefaultMetricsSystem.java:68) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStop(ResourceManager.java:605) > at > org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221) > - locked <0x00000000c0503568> (a java.lang.Object) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.stopActiveServices(ResourceManager.java:1024) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.transitionToStandby(ResourceManager.java:1076) > - locked <0x00000000c03fe3b8> (a > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager) > at > org.apache.hadoop.yarn.server.resourcemanager.AdminService.transitionToStandby(AdminService.java:322) > - locked <0x00000000c0502b10> (a > org.apache.hadoop.yarn.server.resourcemanager.AdminService) > at > org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService.becomeStandby(EmbeddedElectorService.java:135) > at > org.apache.hadoop.ha.ActiveStandbyElector.becomeStandby(ActiveStandbyElector.java:911) > at > org.apache.hadoop.ha.ActiveStandbyElector.processResult(ActiveStandbyElector.java:428) > - locked <0x00000000c0718940> (a > org.apache.hadoop.ha.ActiveStandbyElector) > at > org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:605) > at > org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498) > {code} > looks like the {{sinkThread.interrupt();}} in MetricsSinkAdapter#stop > doesn't really interrupt the thread, which cause it to hang at join. > This appears only once. -- This message was sent by Atlassian JIRA (v6.3.4#6332)